Inconel 718 AMS 5596 / AMS 5662

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Inconel 718 Alloy (Gamma double prime strengthened with good weldability)

Specifications: AMS 5596,  AMS 5662,  AMS 5663,  AMS 5832

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Inconel 718 a Nickel-Chromium alloy being precipitation hardenable and having high creep-rupture strength at high temperatures to about 700°C. It has higher strengththan Inconel X-750 and better mechanical properties at lower temperatures than Nimonic 90 and Inconel X-750. Alloy 718 is a precipitation hardenable nickel-based alloy designed to display exceptionally high yield, tensile and creep-rupture properties at temperatures up to 1300°F (704°C). The age-hardening response of Alloy 718 permits annealing and welding without spontaneous hardening during heating and cooling. Alloy 718 has excellent weldability when compared to the nickel-base super alloys hardened by aluminum and titanium. Alloy 718 is used in aircraft engine parts and high-speed airframe parts such as wheels, buckets, spacers, and high temperature bolts and fasteners, gas turbines, rocket motors,space craft, nuclear reactors and pumps.

Chemical Analysis of Alloy 718

C

MN

P

S

Si

Cr

Ni

Mo

Cu

Co

Cb+Ta

Ti

Al

Fe

Other

Other

19

52.5

3.05

1 max

5.13

.9

.5

18.5